COATS 1055 Balancer - Manual (Page 12)

Balancer Operation
Overview
This machine is a two-plane, microprocessor-based computer
balancer. Any imbalance in a wheel, either static or dynamic, is
resolved into two correction planes (usually the inner and outer
flanges of the wheel) where corrective weights can be applied.
Pressing MODE and selecting the DYNAMIC, ALLOY, STATIC,
or RV mode can change the location of these planes.
Determining the Planes
When the distance gauge is pulled out and held
against the wheel flange, the computer automatically
registers the distance (referred to in these instructions
as the A Offset measurement). The computer will "beep" to indi-
cate it has stored the measured distance. This distance meas-
urement (the Offset) tells the computer the location of the inner
plane of the wheel for Dynamic balancing.
While the distance gauge is held in contact with the
wheel flange, the computer also calculates the wheel
diameter (D measurement). The diameter measure-
ment is automatically entered (along with the offset measure-
ment) when the computer BEEPS. The diameter measurement
tells the computer how far from the center of the hub the
weights will be applied.
The offset and diameter measurement principles are the same
for the 950, however the operator must enter the measure-
ments, instructions on page 8.
When the wheel width is entered into the computer, it is auto-
matically added to the offset measurement to determine the
outer plane of the wheel. The wheel width is entered manually
by the operator as the W measurement.
Balancing a Wheel
When a wheel is spun, the balancer detects any imbalance
present. The computer calculates the weight needed to correct
the imbalance and the location for weight application. The
weight required to correct the imbalance is displayed on the
control panel, and the weight positioning lights assist the oper-
ator in positioning the weight application location at top-dead-
center. Weight displays and positioning lights are provided for
both inner and outer planes of the wheel.
The stop-on-top feature of the 1050 is designed to stop the
spinning wheel with the outer weight application location near
top-dead-center, if no imbalance is detected.
1025
1050
1055
1025
1050
1055
Direct Drive
6 • COATS 950/1025/1050/1055 Wheel Balancer